<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .color{
            color: red;
        }
    </style>
</head>
<body>
    <div id="app">
        <div :class="clickColor ? colorStatu :''" @click="changeColor">我是数据</div>
    </div>
    <script src="../js/vue.js"></script>
    <script>
        const app = new Vue({
            el:'#app',
            data(){
                return {
                    colorStatu:'color',
                    clickColor:true
                }
            },
            methods:{
                changeColor(){
                    this.clickColor = !this.clickColor
                }
            }
        })
    </script>
</body>
</html>